蓝牙5.1到达角向后兼容 [英] Bluetooth 5.1 Angle of Arrival backward compatibility

问题描述

我目前正在设计一个简单的室内定位项目，以评估Bluetooth 5.1标准的可能性.我想使用的功能是蓝牙5.1中引入的AoA(到达角度).

I am currently designing a simple indoor location project to evaluate possibilities of Bluetooth 5.1 standard. The feature I would like to use is AoA (Angle of Arrival) introduced in Bluetooth 5.1.

根据标准，AoA允许通过近似角度并测量定位器/接收器(rx)上的RSSI来测量发射设备(tx)的位置.由于AoA是5.1中新实现的功能，因此我知道rx需要支持5.1蓝牙标准.发射设备怎么样?它需要支持的最低蓝牙版本是多少?我可以为此目的使用4.x BLE信标(或模拟信标的Android/iOS设备)吗?

According to the standard, AoA allows to measure position of a transmitting device (tx) by approximating the angle and measuring RSSI on a locator/receiver (rx). Since AoA is a feature newly implemented in 5.1, I understand that rx needs to support 5.1 Bluetooth standard. How about the transmitting device? What is the minimum version of Bluetooth it needs to support? Can I use 4.x BLE beacons (or Android/iOS devices simulating beacons) for this purpose?

推荐答案

该实现使用包含常量音扩展名"的广告数据的扩展版本.两个设备都需要支持此功能才能计算角度.因此，不，您不能使用旧的4.x设备.两个设备都必须明确支持此功能并使用它.请记住，并非所有的蓝牙5.1和5.2设备都支持此功能.

The implementation uses an extended version of the advertisement data that contains a "Constant Tone Extension". Both devices need to support this feature in order to calculate the angle. So no you can not use old 4.x devices. Both devices must explicitly support this feature, and use it. Keep in mind that far from all Bluetooth 5.1 and 5.2 devices support this feature.

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